Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3f5a677c1a32a67…

MALICIOUS

PDF

94.7 KB Created: 2021-03-05 14:02:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: bdfb7d84b12179c7117e76e1e9d54863 SHA-1: ea5ccdd116c0c62b8932a672491306414dffd647 SHA-256: d3f5a677c1a32a6745ce5a85aab2be057a452feae8eb7ebdd6fc984a1ca9459e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded links, with heuristics indicating a 'PDF_SEO_LINK_FARM' and 'PDF_URI' firings pointing to external websites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution through these links. No scripts were extracted, but the sheer volume of external links suggests a coordinated effort to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://jottigo.ru/award?keyword=maze+runner+2+plot PDF link annotation
    • http://tetiviguxawik.getenjoyment.net/modern_crochet_patterns_and_designs_for_the_minimalist_maker.pdfIn PDF document text
    • http://bekopomulasebi.getenjoyment.net/33259549818.pdfIn PDF document text
    • https://pisiteju.weebly.com/uploads/1/3/5/3/135314571/309959.pdfIn PDF document text
    • https://dosedupuwosiwoz.weebly.com/uploads/1/3/0/7/130776272/woxam.pdfIn PDF document text
    • http://sitebomobegux.sportsontheweb.net/32879635589.pdfIn PDF document text
    • http://xiwesesakuvel.medianewsonline.com/78248755078.pdfIn PDF document text
    • https://zorimogitew.weebly.com/uploads/1/3/4/4/134487520/dikexa_julod.pdfIn PDF document text
    • http://vexasefagi.scienceontheweb.net/dakapuxoporomaja.pdfIn PDF document text
    • https://rogefiraf.weebly.com/uploads/1/3/4/5/134581109/rapovujanakamozez.pdfIn PDF document text
    • http://rubewox.sportsontheweb.net/local_whirlpool_washer_repair.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bejenosugede/jelawavavavime.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/filme_espirita_causa_e_efeito.pdfIn PDF document text
    • https://db6d201d-bdff-4648-9982-d9cfaac7639e.filesusr.com/ugd/98857b_7f1db055c4a3498986bcc76081575b2b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/excel_bedingte_formatierung_auf_andere_zellen_kopieren.pdfIn PDF document text
    • https://a121017b-3fb3-450c-9156-48dd71a9bf80.filesusr.com/ugd/07625c_2e1439759aa84e12bae785ee23924f42.pdf?index=trueIn PDF document text
    • http://sixexelotu.epizy.com/androgenos_y_estrogenos.pdfIn PDF document text
    • https://3fb740b9-71d8-4183-8edb-de11b68c0a29.filesusr.com/ugd/1fbf8b_efc16e8ae1764ecaa89b2b3d6724775b.pdf?index=trueIn PDF document text
    • https://99d7fe5e-e02b-49e2-b8a0-504f7c24d57d.filesusr.com/ugd/8b97dd_555d3429a2864ce191fae27d28f81e98.pdf?index=trueIn PDF document text
    • https://e942959e-95af-4115-ab05-a6e38533eaad.filesusr.com/ugd/66f7a0_cb02eeea8ac64df886cbabf125e1d9ca.pdf?index=trueIn PDF document text
    • http://mobisojew.epizy.com/bollywood_video_song_hd_1080p_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/fadanudebosovudinonarago.pdfIn PDF document text
    • http://jokosen.atwebpages.com/pulagudifuropowajalawij.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001268b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1268B 4656 bytes
SHA-256: db66c58580eb755b3f13b6a94aab5e35653dbb269a036bc7529d0992042622da
font_01_sfnt_off00013679.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13679 12572 bytes
SHA-256: ce5b26c34c8da1eba5582edf8c78d10e46dc5fcfbc24779d4c10ad674cfc601b
font_02_sfnt_off00015eeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EEB 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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